.louceng {
	width: 70px;
	position: fixed;
	top: 50%;
	left: 50%;
	display: none;
	margin-left: -675px;
}

.louceng li {
	list-style: none;
	line-height: 30px;
	height: 30px;
	background-color: #fff
}

.louceng li.current {
	background-color: #3DA601;
	color: #fff;
}
